class_docstr: Structural type for model fit metrics.
class_docstr_tok: ["Structural","type","for","model","fit","metrics","."]
code: def __call__(
      self, y_obs: np.ndarray, y_pred: np.ndarray, se_pred: np.ndarray
  ) -> float:
      ...
  
file_path: Ax/ax/utils/stats/model_fit_stats.py
imports: from typing import Dict, Mapping, Optional, Protocol
  import numpy
  from scipy.stats import fisher_exact, norm, pearsonr, spearmanr
label_desc: Use image node_id 1 for calling the ModelFitMetricProtocol obj's underlying member method code with example usage: obj.__call__(y_obs, y_pred, se_pred) without return types